Brush.



Patented Ap1 .20,1909.

. n n l m a. V H m BRUSH.

I awe/whom I gfihn @fiuahanan,

J. BUCHANAN.

APPLICATION FILED DEC. 6, 1907.

JOHN F. BUCHANAN, OF INDIANAPOLIS, INDIANA.

Specification of Letters Patent.

Patented April 20, 1909.

Application filed. December 6, 1907. Serial No. 405,307.

To all whom it may concern:

Be it known that I, JOHN F. BUCHANAN, a citizen of the United States, residing at Indianapolis, in the county of Marion and State of Indiana, have invented certain new and useful Improvements in Brushes, of

which the following is a specification.

My present invention consists in certain improvements in the construction of brushes, whereby they are enabled to withstand very hard usage.

This improved brush has been especially designed for use in mill bolts, where it is not only in contact with the surface of the bolt structure, but also in many cases serves as a conveyer to convey material through the tubular bolting chamber within which the frame carrying the brushes is located,

Said invention consists in mounting the bristles of thebrush in a leather or similar tough, flexible base, composed of a central and two side members into Which perforations for the brush bristles extend, the side members being narrower than the central member, and the wires or ties which hold the bristles in place being secured on the back edges of said side member, where they are protected from wearing contact with the material.

Referring to the accompanying drawings, which are made a art hereof, and on which similar reference 0 aracters indicate similar parts, Figure 1 is a perspective view of a machine of the character with which my improved brush is especially designed to operate, a portion of thewall being broken away to show the position of the bolting mechanism therein, and a portion of the wall or cloth of the bolt proper or reel being also removed, to show the brushes within it, and the frame by which they are carried; Fig. 2 a detail elevation of a fragment of'the" brush and conveyer structure, on an enlarged scale; Fig. 3 a detail elevation of a fragment of the brush separately, on a still further enlarged scale, and Fig. 4 a detail transverse sectional view at the point indicatedby dotted line 44 in Fig. 3.

The bolting machine and its various arts other than the brush are shown mere y to illustrate the situation in which my brush is designed to be used and the character of workwhich it is designed to do. w This machine 21 may therefore be of any ordinary or desired form of construction. 'Within the walls of this machine is the usual bolting frame 22, surrounded by bolting cloth 23; said frame and bolting cloth wall being constructed to form a cylindrical chamber. Vfithin this chamber is mounted a frame 24, usually and preferably of a spiral character, carried by a shaft 25, and the ribs of this frame carry brushes constructed in accordance with my present invention. These brushes consist of the usual bristles or brush contact parts 31, carried upon a base which preferably consists of a central comparatively wide member 32, and two comparatively narrow side members 33 and 34. This produces a base which is substantially T-shaped in cross section. The perforations 40 into which the bristles 31 enter, are

. substantially parallel with the sides or faces of the part 32 and lie about half in said part and half in the adjacent part 33 or 34, extending only a short distance into said parts, and having formed in their bottoms, preferably entirely in the part 33 or 34, as the case may be, the perforations 41 which extend throughthe part 33 or 34. The bristles are drawn into these perforations 40 and there held by means of ties 35, which pass out through the perforations 41 to the back edges of the side members and are there securedin the protected positions formed by the corners or spaces above said side members and alongside the wider projecting central member, as is best shown in Figs. 3 and 4.

' These brushes, in the use for which I have particularly designed them, are secured to the frame of the central combined brush and conveyer 24, by being screwed or bolted thereto. In operation, the material is operated upon by this combined brush and conveyer in the ordinary manner. The brush,

however, being made as it is of very tough material, and the ties which hold the bristles being protected from forcible contact with any of the adjacent parts, or with the material being carried through the bolt, will not become broken orworn off, and the bristles are therefore held much more securely in place, and the brush will consequently last .muchv longer, than with previous constructions. The bristles also being thus held securely in place, are kept from becoming intermingled with the flour orother material being treated, or from penetrating the bolting cloth forming the wall of the bolt, with the well-known disadvantageous results.

Having thus fully described my said invention, what I claim as new, and desire to secure by Letters Patent, is

Asa new article of manufacture, a brush the base whereof is of tough flexible material and comprises a central wide part and two narrower side portions, said base having bristle-holding perforations formed mainly in the central wider portion and substantially parallel with the sides thereof, and said side portions having smaller perforations for the ties leading from the bristle-holding perforations to the corners where the middle portion and side portions meet, bristle bundles inserted in the bristle-holding perforations, and ties engaging with the bristle bundles and extending through said tie perforations and secured in the protected corners behind the edges of the side pieces, substantially as shown and described.

In witness whereof, I, have hereunto set my hand and seal at Indianapolis, lndiana, this twenty-eighth day of November, A. I). one thousand nine hundred and seven.

JOHN F. BUCHANAN. [In s1 Witnesses Cnnsrnn BRADFORD, THOMAS W. MeMnANs. 

